EP 0955321 A3 19991208 -

Publication

EP 0955321 A3 19991208

Application

EP 99105417 A 19891221

Priority

EP 96120158 A 19891221
JP 32873188 A 19881226
JP 32873288 A 19881226
JP 32873488 A 19881226
JP 1459689 A 19890124
JP 18904489 A 19890721

Abstract (en)

[origin: US5336746A] A random copolymer of propylene with from 1 to 10 mol % of a C4 to C20 alpha -olefin and an intrinsic viscosity of 0.5 to 6 dl/g is also characterized by a melting point (Tm) measured by a differential scanning calorimeter falling within the range of 90<Tm<155-3.5(100-P) (wherein P is the propylene content (mol %) present in the copolymer), a molecular weight distribution (Mw/Mn) of less than 3.5, and a boiling trichloroethylene-insoluble content of less than 5% by weight. Terpolymers of propylene-ethylene-C4-C20 alpha -olefin wherein Tm falls within the range of 70<Tm<155 -5.5(100-P) are also described. The propylene random copolymer is prepared by polymerizing propylene, alpha -olefin, and optionally, ethylene in the presence of a catalyst system which includes an hafnium compound having a multidentate ligand and two or more cycloalkadienyl groups linked together via an alkylene linkage, and an organoaluminum oxy-compound.

IPC 1-7

C08F 210/16; C08F 4/64

IPC 8 full level

C08F 4/64 (2006.01); C08F 4/642 (2006.01); C08F 10/00 (2006.01); C08F 10/06 (2006.01); C08F 210/08 (2006.01); C08F 210/16 (2006.01); C08F 4/659 (2006.01); C08F 4/6592 (2006.01); C08F 110/06 (2006.01); C08F 210/06 (2006.01)

CPC (source: EP KR US)

C08F 10/00 (2013.01 - EP US); C08F 10/06 (2013.01 - EP US); C08F 210/00 (2013.01 - KR); C08F 210/08 (2013.01 - EP US); C08F 210/16 (2013.01 - EP US); C08F 4/65912 (2013.01 - EP US); C08F 4/65916 (2013.01 - EP US); C08F 4/65927 (2013.01 - EP US); C08F 110/06 (2013.01 - EP US); C08F 210/06 (2013.01 - EP US); Y10S 526/916 (2013.01 - EP US); Y10S 526/943 (2013.01 - EP US)

C-Set (source: EP US)

Citation (search report)

[X] EP 0141597 A1 19850515 - MITSUI PETROCHEMICAL IND [JP]
[X] EP 0109779 A1 19840530 - MITSUI PETROCHEMICAL IND [JP]
[PX] EP 0341091 A2 19891108 - DOW CHEMICAL CO [US]
[Y] EP 0283164 A2 19880921 - MITSUI PETROCHEMICAL IND [JP]
[Y] EP 0123510 A1 19841031 - CHEMPLEX CO [US]
[A] FR 2346372 A1 19771028 - UNION CARBIDE CORP [US]
[X] GB 2052532 A 19810128 - MITSUBISHI PETROCHEMICAL CO
[X] EP 0263718 A2 19880413 - MITSUI PETROCHEMICAL IND [JP]
[Y] EP 0260999 A1 19880323 - EXXON CHEMICAL PATENTS INC [US]
[Y] DE 2637990 A1 19780302 - HOECHST AG
[Y] US 4761462 A 19880802 - KITAMURA SHUJI [JP], et al
[X] DE 2637991 A1 19780302 - HOECHST AG
[X] EP 0284707 A1 19881005 - COSDEN TECHNOLOGY [US]
[X] WO 8702991 A1 19870521 - EXXON CHEMICAL PATENTS INC [US]
[X] WO 8808432 A1 19881103 - MITSUI PETROCHEMICAL IND [JP] & EP 0314797 A1 19890510 - MITSUI PETROCHEMICAL IND [JP]
[X] WO 8803932 A1 19880602 - MITSUI PETROCHEMICAL IND [JP] & EP 0324856 A1 19890726 - MITSUI PETROCHEMICAL IND [JP]
[X] PATENT ABSTRACTS OF JAPAN vol. 011, no. 251 (C - 440)<2698> 14 August 1987 (1987-08-14)
[X] PATENT ABSTRACTS OF JAPAN vol. 011, no. 394 (C - 465)<2841> 23 December 1987 (1987-12-23)
[Y] PATENT ABSTRACTS OF JAPAN vol. 011, no. 349 (C - 456)<2796> 14 November 1987 (1987-11-14)
[X] PATENT ABSTRACTS OF JAPAN vol. 011, no. 349 (C - 456)<2796> 14 November 1987 (1987-11-14)
[Y] PATENT ABSTRACTS OF JAPAN vol. 012, no. 450 (C - 547)<3297> 25 November 1988 (1988-11-25)
[Y] PATENT ABSTRACTS OF JAPAN vol. 012, no. 444 (C - 545)<3291> 22 November 1988 (1988-11-22)

Designated contracting state (EPC)

DE FR GB IT NL

DOCDB simple family (publication)

US 5336746 A 19940809; EP 0685496 A1 19951206; EP 0685498 A1 19951206; EP 0685498 B1 19990526; EP 0769505 A1 19970423; EP 0769505 B1 20000510; EP 0955321 A2 19991110; EP 0955321 A3 19991208; EP 0955322 A2 19991110; EP 0955322 A3 19991208; KR 900701872 A 19901204; KR 930009208 B1 19930924; US 5525689 A 19960611; US 5714426 A 19980203; US 5916988 A 19990629

DOCDB simple family (application)

US 90197292 A 19920622; EP 95202089 A 19891221; EP 95202093 A 19891221; EP 96120158 A 19891221; EP 99105417 A 19891221; EP 99105447 A 19891221; KR 900700330 A 19900216; US 45869695 A 19950602; US 45979595 A 19950602; US 83195397 A 19970402